Sergash: Even in 2016, Glenn Gaasland is rated 2057. From Norway, he was born in 1978 and so was 22 or 23 years old when he played this game. Carlsen was rated 2072, according to Chessbase.
I checked the game with the program Komodo 10 - 64 bits and it was not a Carlsen's domination or an "almost unfair matchup", but simply a blunder in a completely equal position 2 moves before the end!
<7...Bb7> Carlsen goes back to this move. He had first played it in the game G Kacheishvili vs Carlsen, 2001 . Then he had switched to 7...Ba6 in C Braun vs Carlsen, 2001 and now he is back to 7...Bb7.
<8.f3> In the mentioned game agaisnt Giorgi Kacheishvili (G Kacheishvili vs Carlsen, 2001) White had played 8.e3 here. We are apparently now headed for something new for Carlsen in tournament play.
<10.Bd3?!> This is possibly the first weak move in the game. White should first exchange pawns before developing this bishop. The most played line goes as follow: 10.cxd5 exd5 11.Bd3 Re8 12.Ne2 h6 13.Bh4 c5 14.0-0 Qe7 15.Bf2 Rac8 Milan Drasko (2525) vs. Sanja Kalevitc (2270), Subotica-Palic (Yougoslavia) 1992, 1-0.
<11...Qe8?!N> This was the novelty of the game, which is dubious. 11...c5! 12.cxd5 cxd4 13.exd4 Rc8 14.Qd2 Bxd5 = Dao Thien Hai (2560) vs. Ivan Farago (2510), Budapest (Hungary) FS02 GM 1993, 0-1.
<12.Bg3?!> ...to which Gaasland did not respond in the best way! 12.Ne2! c5 (D. Glazar (2140) vs. E. Macura (2006), 15th IPCA (International Physically Disabled Chess Association) World Championship 2015, round 3, draw) 13.cxd5 e5 .
<12...Rc8?! 13.c5! > First the trade of pawns and then the defense of the c7 pawn. 12...dxc4 13.Bxc4 Rc8 =.